Welding and cutting torch.



A. v. & I. F. FAUSEK." WELDING AND CUTTING TORCH. APPLICATION FILED APR. 11, 1912.

Patented July 1, 1913.

- souri, have invented certain new. and useful ing a part of this specification.

I is a vertical sectional view taken. throu h n1 STAT E PATENT oF ioE.

ALEXANDER. v. FAUSEK ANDIRWING F. FAUSEK, or ST. LOUIS, MISSOURI. I

WELDING AND CUTTING TORCH.

Specification of Letters Patent.

- Application filed Aprilll, 1912. Sefia1No.690,132.

To all whom it way concern:

Be it known that we, ALEXANDER V. FAU- SEK and Inwmo F. FAusnK, both citizens of the United States of America, and residents of the city of St. Louis and State of Mis- Improvements in Welding and Cutting Torches, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, form- Thisinvention relates to certain novel and useful improvements in a Welding and cutting torch or burner employing acetylene and oxygen gases under pressure, or other combustible and combustion supporting gases under pressure to produce a flame of high temperature;

In carrying out our invention, it is our purpose to provide a novel means for mix ing the .combustible and combustion sup-' porting gases under pressure so that a more perfect mixture can be obtained and maintained.

Still a further object of the invention is the provision of means in the torch whereby the danger of back firing is eliminated.

We also aim to provide for the accurate proportionof the gases entering the mixing chamber so that the proper mixture may be fed to the torchnozzles.

Furthermore, we provide an interchangeable nozzle or tip which is independent of the mixing head. Y

With the above recited objects and othersof a similar nature in View, our invention consists in the constri1ction,.combination and arrangement of parts set forth in and falling within the scope of the appended claims. In the accompanying drawings :---Figure the entire head of the torch and showing the separate gas conduits connected thereto. Fig. II is a view partly in vertical section and partly inelevation, showing the body portion of the torch which includes the casing forming the handle andthe' separate gas conduits. big. III is an enlarged central sectional view-through the mixing head, and showing a part of the housing and the nozzle. FigIV is a similar view of a modificati-on; Fig, V is an enlarged central part sectional view of the automatic spring-dos;

central part sectional view of the screw ad justing valve located in the combustion sup- Patented July 1,1913.

ing check valve. Fig. VI is an enlarged porting gas conduit,.and screw plug to seal opening. Fig. VII is an enlarged end view of the mixing head looking from the tip of the torch. I 1

' Referring now to the accompanying drawings in detail, the letter A illustrates the housing ofthe head of the torch, While B.

indicates the interchangeable nozzle or tip which receives the mixed gases from the interchangeable mixing head 0. D represents the screw adjusting valve and E the screw plug while F is an automatic spring closing valve controlling the companion gas conduit to that provided with the screw valve D. Within the casing or chamber 2 is located a cylindrical tube H formed of fine Wife gauze screen,'whi1e the letter I indicates the tailpiece of the torch.

The combustible gas enters through the conduit 1 into the chamber'or casin 2 in which is located the gauze screen pipe or conduit 4 and thence to the automatic spring closing check valve F. The

gas passes through the passages 5 and lifts the valve F from its seat 7 compressing the spring 6 and filling the space 8 -with'the combustible gas.

The combustion supporting gas enters It then passes through this screen into the through the-passage 9 and passes through V the conduit or pipe 10 and through the reduced passage 11 to the valve D which seats on the seat 12. After passing this valve, the combustion sup orting gas flows through the laterally inclined channel 13 in the housing and thence through the longitudinalbore 14 of the mixing head to the mixing chamber formed by the conical diverging channel 15 of the mixing head and the conical converging channel 16. in the adjacent end of the torch tip or nozzle. The rushing of the combustion supporting gas'through these conical channels reduces the pressure in the spirally located passages 12 in the mixing head C, thus drawing in the combustible gas from the space 8. Near the conical end of the passage 16 are located threads 19 which are reverse to this-w lairling motion of the gases and tend to checlt such motion. From the mixing chamber the I mixed gases pass out through the passage 18 of the nozzle to the air for ignition. In the discharge end of the mixing head are the pin wrench holes 20 for changing the mixing heads.

We are aware of the fact that torches have been made for burning a mixture of two gases such as oxygen and acetylene, but we believe ours to be superior to the structures with which we are acquainted in that we provide our torch with an automatic spring closing check valve located within the housing or head of the torch as near as possible to the mixing head 0. Thus in case of back fire or back burni this valve will close immediately, thus usually preventing the flame from running through the body of the torch. This is a decided advantage over a torch provided with a check valve located in the handle or receiver chamber where it would not respond quickly to the pressure or would be the flame running along through the body of the torch. A further important feature of our torch is the fine wire gauze screen H which is at.the opposite end of the same conduit. having the valve F. This screen acts as a supplemental or secondary check for back firing and in addition screens out all particles of foreign matter carried insuspension in the gas. r 1

It is desirable in welding light and heavy materials to employ flames of different magnitudes, and this is accomplished by nozzles or tips of different bore, and by means of several interchangeable mixing heads, it will be possible to. accomplish a very large range of work. A very important feature of all welding torches is the construction of the mixing head. In our torch, like all others, we depend on the ratio of the areas of the gas passages to give the proper mixture, but we provide a valve D to adjust the final ratio of the mixture more accurately, thus having better control of the quality of the flame which is so important to good weld-p mg. v

\Vhile We have herein shown and described one particular embodiment of our invention, do not confine ourselves to all the precise details of construction herein set forth, as modifications and variation may be made Without departingfrom the spirit of the invention or exceeding the scope of the appended claims.

What we claim is a housing and a nozzle therefor, of a plurality of separate gas conducting tubes connectedwith the housing, a

-m1xing chamber for the gases in the housing,

a valve located-at one end of one of said tubes and within the housing and adapted to be closed automatically by back pressure in combination with located too distant to prevent we wish it to be understood that we with is prevented, and a screen connected with the other end of the said last mentioned tube.

2. In a torch of the class described, the a housing and a mixing of a gas conducting tube exthe housin head therein, tending into at the end of the tube within the housing and adapted to be closed automatically by back pressure in the housing whereby back in said tube-is prevented, and a screen carried at the opposite end of the tube remote from the housing.

3. In a torch of the class described, the combination with a housing provided with a mixing chamber, of a gas conducting tube connected with the housing, a valve located at that end of the tube which communicates a valve located with the housing and adapted to be closed automatically by back pressure in the housing whereby back fire insaid tube is prevented, a tubular screen at the opposite end of the tube remote from the housing, a casing surrounding the tubular screen,'and a second gas conducting tube extending adjacent the first mentioned tube and communicating with the housing.

4. In a torch of the class combination witha housing provided with a mixing chamber, of a plurality of separate gas conducting tubes leading to the housing, an adjustable valve for one of said tubes, a valve for the other of said tubes located at that end of the tube which communicates with the housing and adapted to be closed automatically by back pressure in the hous ing whereby back fire in said. tube is prevented, a casing comiected with the last mentioned' tube, and a screen located within the casing and connected with the end of such last mentioned tube remote from the housmg.

.5. In a torch of the class described, the combination of a housing having separate passages formed therein, and a channel leading from one of the passages, separate gas conducting tubes communicating with said passages, an adjustable valve for controlling the flow of gasfrom one of said passages to the channel leading therefrom, a mixing head within the housing, said mixing head having a mixing chamber and a passage communicating with the channel, a detachable nozzle connected with the housing and provided with a bore terminating in an opening communicating with the mixing chamber of the mixing head, an automatic 1. In a torch of theclass described, the combination with valve located at the end of one of the gas conducting tubes, and a tubular screen at the opposite end of the last mentioned gas conducting tube.

6. A torch of the class described provided separate conduits for two gases under pressure, an. interchangeable shouldered end constituting a seal and described, the v tip having a l formed with a longitudinal passage, one end of said passage being flared to form a conical opening, means for conducting" gases from said conduits to the conical opening, "and threads cut in said longitudinal passage near the apex of the conical opening to mix the gases.

7. In a torch of the class described, the combination of a housing having separate passages formed therein, separate. gas conducting conduits communicating with said passages, a channel leading from one of the passages, an adjustable valve for controlling the flow of gas from the last mentioned passage to the channel, a mixing head Within the housing adjacent the other passage, said mixing head having a mixing chamber therein and'ports spirally arranged leading. therefrom, said head having a bore communicating with the channel, a detachable nozzle connected with the housing and provided With alongitudinal bore terminating in a conical opening communicating with the mixing chamber of the mixing head, and

threads cut in said longitudinal passage near the conical opening to mix the gases.

' 8. In a torchof the class described, the

is prevented. a

A. V. FAUSEK. I. F. FAUSEK. In the presence of 1 F. A. PENTLAND, AMELIA FA sEK. 

